The X-shaped structure is the optic chiasma (part of the optic nerve).
Structure of the optical chiasma:
The fibers from the ganglion cells of the nasal retina and the temporal retina come together and leave the eyeball to form the two optic nerves (forming an X-shape). Each optic nerve passes through the optic hole of the sphenoid bone and extends in and out of the skull. The two nerves meet at the front and above the pituitary to form the optic chiasma. At this level, fibers from the nasal retina intersect while those from the temporal retina continue in the same trajectory to form the two optical tracts.
Answer: An autotroph is an organism that can generate it's own nutrients. In the example, you see a relationship which allows the pea aphid to gain more energy, but not produce it.
And heterotroph is an organisms that can't generate it's own nutrients, and therefore needs to feed on something, which is the case of pea aphids.
C is the answer
Explanation: yw plz mark brainliest (:
The Corona is known as the outermost feature of the Sun. The temperature of the Corona is about 900,000 degrees Fahrenheit! It can't be seen with the naked eye!
Answer:
is held in genetic material called DNA. The answer is B
Explanation:
the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.